The current Oxygen style and window decoration for KDE4 can be found in SVN under http://websvn.kde.org/trunk/KDE/kdebase/runtime/kstyles/oxygen and http://websvn.kde.org/trunk/KDE/kdebase/workspace/kwin/clients/oxygen

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The current Oxygen style and window decoration for KDE4 can be found in kde-workspace git repository (https://projects.kde.org/projects/kde/kdebase/kde-workspace). The relevant subdirectories are:

In (double) spinboxes the font is positioned one pixel too high. Lowering it one makes it baseline-aligned with labels in front. Unfortunately not possible. We want them to be the same size as editable comboboxes and lineedits and buttons so those line up. The 1px wrong placement of text is a qt weirdness that gives visual bugs when we try to work around it

Centered group titles pose several problems. Left align group titles instead. See Discussion for more details.

KMenu::addTitle() adds a widget action to display a title in a popup menu. This is not specific to Oxygen, but the widget it creates could use some polishing. (to see this, right click any icon in the system tray)not a style bug report to kmenu maintainer - and don't ever add things to "accepted bugs" below again - this went unnoticed because of that

"flat" buttons drawn same as regular buttons we may not want flat buttons - considering